Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.13/33994
- Search for the X-phase in poled PZN-PT using very high-resolution single-crystal neutron diffraction
Kisi, E. H.;
Forrester, J. S.;
Howard, C. J.;
Ibberson, R. M.
- The University of Newcastle. Faculty of Engineering and Built Environment, School of Engineering
- Reports that in PbZn⅓Nb⅔O3–x%PbTiO3 (PZN–PT) relaxor ferroelectric crystals an 'X-phase' exists, which has a cubic interior and a 10–50 μm thick rhombohedrally distorted surface, have been re-examined to resolve the effect of electric poling. The crystal structure of electrically poled and de-poled PZN–4.5%PT single crystals has been studied using a novel rotating single-crystal method on the high-resolution neutron powder diffractometer at the ISIS Facility. The recorded patterns are neutron time-of-flight analogues to the zero layer lines of rotating single-crystal x-ray diffraction patterns. Both  and  zones were examined and they demonstrate unequivocally that the crystals do not have a cubic core. There appears now to be direct evidence against the occurrence of the 'X-phase' in every circumstance in which, based on synchrotron studies, it was previously proposed to exist.
- Journal of Physics - Condensed Matter Vol. 19, Issue 23
- Publisher Link
- Institute of Physics (IOP) Publishing
single-crystal neutron diffraction;
relaxor ferroelectric crystals;
- Resource Type
- journal article